Sequences Flashcards by Mohamed Bouya

Q

Arithmetic sequence formula

A

Uñ=a +(n-1)d

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Q

Arithmetic series

A

1/2 n(2a+(n-1)d

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Q

Geometric sequence formula

A

ar^n-1

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Q

Geometric series formula

A

a(1-r^n)/1-r

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Q

Sum to infinity

A

A/r-1 -1 <r<1

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Q

Standard result for series

A

1/2 (n)(n+1)

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